Improvement in wood-turning lathe



Y anat ,sara para ,cip-a.

LORING ATWOOJ) AND EDWARD RIPLEY, OF RUTLAND, VERMONT, ASSIGNORS4 TO THEMSELVES AND BAXTER D. WHITNEY, OFWINCHENDON, MASSACHUSETTS.

Letters Patent No. 99,810,4dated .February 15, 1870; a-nteclated February 5, 1870.

IMROVEMBNT IN Woon-TURNING LATHE.

YThe Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern: v

Be it known that we, LORING ATWOOD and ED- WARD RIPLEY, in the county and town of Rutland, and State of Vermont, have invented certain new and useful Improvements in an Automatic Wood-Turning Gauge-Lathe, (and .have assigned an interest in the same to BAXTER D. WHITNEY, of Winchendon, Massachusetts;) and the following is a full, clear, and exact description of the same, reference lbeing had to the accompanying drawings, making a part of this specification, in which- Figure 1, plate 1, represents a front or face view of the lathe, (with a finished bed-post in it,) showing the elevated frame in the rear with the slide and Inode of operating the finishing cutters.

Figure 2, plate 2, represents an end view or elevation of' the same.,

Figure 3 shows a detached view of the revolving chuck or selfcentering mechanism in a horizontal and end' section, in three figures.

Figure 4 shows three views of the internal arrangement of the centering and steadying mechanism.

The object of our invention is to facilitate the turning of wood to any desired pattern or configuration, so that every piece shall lill the gauge and be alike.

It consists in the construction of a self-centering chuck, so arranged and pivoted to the centralportion of the lathe that it may he turned from' the line of the centers to allowthe putting in and taking out of the stu', which,'when brought in position to the points ofthe lathe, is properly centered and held steady while being turned.

Our invention consists in improvements to the automatic gauge-lathe patented to BAXTER D. TRIT- lmY, August-7, 1860, No. 29,534.

To enable others to make and use our improved gauge-lathes, we will describe it more fully, referring to the drawings and the letters of reference marked thereon. y

Ourlathe, shears, heads, and supports are constructed like ordinary engine turning lathes, or iu a similar manner to the WHITNEY patent lathe abovementioned, `with slide-rests A A', provided with a suitable number of tool-holders, a a, in which various shaped cuttinggonges and ehisels b b may be set and secured, so as to corner and reduce the piece being turned, and give the outline of the shape by vconforming to the patterns B B, which are placed in a suitable position on the shears to govern the tools as they are fed along by the rght-and-left serew'G C', placed under in front of the shears.

The slide-rests are-provided with clutch-nuts c c, connecting rods e e, and hand-levers d d, to throw them into gear with the screws C and a stop-bar, f, to trip the catches and stop their forward movement and allow the rests to be carried back to the starting point by a cord and weight, or any other suitable mechanical device.

To the rear side of the lathe frame or shears is secured the frame D, which is elevated in a vertical` position asuiiicient height to form the ways-and guides g g to the sliding ii'ame E, to which the `finishing knives or cutters F F' are attached, they being so constructed and their faces so formed as to give the shape` and linish to the portion of wood; They are brought in cont-aetwith the cutters F F', being placed diagonally on the sliding frame E at such au angle thatthey commence to follow in the rear of the slide-rests A A' as the wood is reduced vby the gouges and chisels i) b, so that the process of rough turning or redu-cing and the. smoothing and finishing may both be going on at the same time on the opposite sides ofthe stick, thus supporting one another' or preventing the vibrating of the stick being turned. v l

The frame D and sliding frame E, which carries the finishing cutters- F F', being an independentxture,

may be used or not, at pleasure, at thevsame time the l reducing is being done, or afterwards, the movement vbeing effected by a separate feed-screw, H, placed beneath guide-bars G, in which is a movable head, I, provided with `a clutch-nut', h, and fixtures the saine as the others before described.

The movable head I has an angle notch, t', which ts and slides on the angular bar J, which is secured at its ends to the rear side of the sliding frame E, by which means the cutters F F are steadily brought in contact with the revolving timber to do their work;

and when done the clutch-nut is relieved from the screw H, and the frame E is raised up toits standing position by means of the weight K, pulley L, pinion k, andi-ack l, or any other suitable mechanical devices.

The revolving chuck M, which centers the bed-post N or other articles to be turned, is constructed as shown in the'several views in figs. 3 and 4, with sliding jaws m m in each end of the circular opening through it.

The jaws are so shaped that they will take hold of ,the square corners of a stick or grasp any other shape to hold it and bring it to the center, or centrally with the opening o by means of double -concentric rings n n,

Vacting on the'jaws m fm like the common scroll-chuck for holding things in lathes.

The chuck M being thus constructed, is fitted into a support, P, so as to easily revolve in it, the opening, through it heilig perfectly central with the points of the lathe-mandrel Q and tail-screw R, when turned so as to be in a line with them.

The support I rests on a broad circular base, p, ou a surface for it in the central portion of the lathe-hed, and is pivoted to it, so thatit will turn or swivel round to bring the opening `o in a convenient position to put When pieces of considerable length are to be turned in or take out the wood or stick turned. When the jaws m m bear upon the wood it will be central with the centers ofthe lathe.

The revolving chuck M made so as to be swiveled round, as above described, to receive and liberate the pieces in a convenient manner, has the advantage of centering in the quickest time and more perfectly than can be done by any other mode, `while it has also an other advantage-that of steadying the piece whilee revolving or being turned.

plain, or nearly so, the finishing knife or cutter may be dispensed with, and the finishing done by a cutter set in the slide-rest which rides on the pattern and gives the form and size.

It is confidently believed that full one-third more turning can be done in a given time, and in a much superior manner, by our improved automatic Woodtnrning gauge-lathe than by any other known or used.

Having thus fully described our improvements,

What we claim as new, and desire to secure by Let l ters Patent, is-

The chuck M when pivoted as herein described, thereby allowing its axis' to be turned from the line of the centers of the lathe, as and for the purposes specified.

In testimony whereof, ive hereunto'snbscribe our names in the presence of two witnesses.

' LORING ATWOOD. EDWARD RIPLEY.

Nitnesses:

S. L. FISHER, FRANCIS A. FISHER. 

